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: UNITED STATES PATENT OFFICE.

JAMES F. SNEDIKER, OFfPHILADELPHIA, PENNSYLVANIA, Assrenon TO JOHN 0.LOVE, or SAME PLACE.

SEWING-MACHINE ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 253,486, dated February7 1882.

Application filed January 14, 1882. (No model.)

To all whom it may concern:

Be it known that I, JAMES F. SNEDIKER, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Sewing Machine Attachments, of which the following is aspecification.

My invention consists of mechanism, fully described hereinafter, wherebya lateral reciprocating motion is imparted to the needle for making azigzag stitch.

In the accompanying drawings, Figure l is a perspective view of myimproved attachment; Figs. 2, 3, 4, and 5, side views, partly insection, showing the moving parts of the device in difl'erent positions;and Fig. 6, a front view of the device.

A represents the head or end of the stationary arm of an ordinarysewing-machine-a Singer machine, for instance-and B the needle-bar, thelatter being reciprocated vertically by the usual mechanism, which ithas not been deemed necessary to show or describe. To the lower end ofthe needle-bar is secured a block, I), grooved for the reception andlateral guidance of a sliding plate, a, in the under side of which areformed openings for the reception and retention of one or more needles,or.

On the back of the slide a are formed two lugs, c 0, into the spacebetween which projects the lower end of one arm of a lever, F, thelatter being pivoted to a bearing, (1, formed on or secured to the blockD.

To the front of the head A is secured a plate, J, having a lug, to whichis pivoted a lever, e, having three arms, 2', i, and i the arms 2" and ibeing situated in respect to each other substantially as shown. The arm2' is wedgeshaped, and the arms 2" and i have inclined upper sides, sothat the top of the lever 6 presents t-wo inclined planes, arranged atan angle in respect to each other, and upon these planes actsaspring-stud, m, adapted to slide in a tubular projection on the plate J.

When the several parts are in the position shown in Fig. 2 theneedle-bar B has just commenced to rise. As the said bar rises the upperend of the arm b of the lever F strikes the inclined face a of the arm iof the lever e, and is thereby moved inward, the lower end of the leverF thus imparting a lateral movement in a reverse direction to theneedle-carrying slide a. This movement continues until the upper end ofthe lever F strikes the under side of the arm i? of the lever c, asshown in Fig. 3. The upward movement of the needle-bar still continuing,the result will be the turning of the lever c in the direction of thearrow until it assumes the position shown in Fig. 4-that is to say, withthe apex of its wedge-like upper surface slightly beyond the center ofthe spring-stud m. The needle-bar now descends, and as soon as the upperend of the lever F has cleared the lower end of the arm a of the lever cthe action of the springstud m on the upper end of said lever causes itto assume the position shown in Fig. 5, so that on the next upwardmovement of the needie-bar the outer inclined surface, a, of the arm 0will act on the upper end of the leverF and a lateral movement in adirection contrary to that above described will beimparted to theneedle-carrying slide a, while the reversal of the posit-ion of thelever 0 will be effected by the action of the upper end of the lever Fupon the arm 5 of the said lever c.

The above-described device is vsimple and inexpensive and can be readilyapplied to an ordinary machine without necessitating material change ofthe latter.

The lever 6 might be acted on by different forms of springs, and theslide a might have a rigid upwardly-projecting arm, upon which the arm 6of the lever e might act to reciprocate the slide, and by which the arms15 and i of the lever might be acted upon in order to shift the positionof each lever.

I wish it to be understood that I do not claim in this application asewing-machine attachment in which a pivoted spring-lever having threearms, i, t", and P, as described, is combined with a needle-carryingslide, (I, having an arm or lever, F, for acting on and being acted onby the lever e, as set forth, as this specific combination of parts isclaimed in a separate application for a patent; but

I claim as my invention-.-

1. In a sewing-machine attachment, the com- In testimony whereof I havesigned my name 10 bination of a. retaining-spring, pivoted tapp'et tothis specification in the presence of two sub- 01' lever,needle-carrying bar or slide a, block scribing witnesses. D, arm orlever F, and devices for operating 5 said tappet or lever. J AMES F.SNEDIKER.

2. The combination of the needle-bar and its block D, having a slide, a,and lever F, \Vitnesses: with the plate J, carrying a pivotedspr'ing-le- HARRY DRURY, ver, 0, with three arms,i M as specified. HARRYSMITH.

